Granite is a felsic or acidic rock. A vesicle is a cavity formed by expanding gas during the cooling of an extrusive igneous rock. A good example of vesicles are those found in pumice. If a vesicle is filled in by a secondary mineral it is described as an amygdale.
InformAfrica â Kisii County is a district in the Nyanza Province of southwestern Kenya, and is mostly inhabited by the Gusii tribe or Kisii people. Kisii is the capital town of Kisii county. As of 2010, Kisii county has 7 constituencies which are: Bobasi, Bonchari, Bomachoge, Kitutu Chache, Nyaribari Chache, Nyaribari Masaba, and South Mugirango.
Maps showing the locations of major ethnic groups in Kenya. Kenya is home to a large number of ethnic groups, including the Kikuyu (the largest single group at around 22%), the Luo, and the Maasai.. Kenya is home to a large number of ethnic groups, including the Kikuyu (the largest single group at around 22%), the Luo, and the Maasai.